<!DOCTYPE html>
<title>
    begin
</title>
<body>
    <h1>
        起始界面
    </h1>
    <div id="Create_Room">
        <p id="room_id"> </p>
        <button id="button_create_room"></button>
    </div>
</body>
<script type="text/javascript">
    function create_room(){
        
    }
</script>

